(692 + 19) : 79 = 9
552 : 69 − 8 = 0
342 : (100 − 43) * 80 = 480
(297 : 99 + 520 : 65) * 9 = 99
Вычисления:
(692 + 19) : 79 = 9
1)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}692\\ 19\end{array}}\\ \begin{array}{r}711\end{array}\end{array}$
2) 711 : 79 = 9

552 : 69 − 8 = 0
1) 552 : 69 = 8

2) 8 − 8 = 0
342 : (100 − 43) * 80 = 480
1)
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}100\\ 43\end{array}}\\ \begin{array}{r}57\end{array}\end{array}$
2) 342 : 57 = 6

3)

(297 : 99 + 520 : 65) * 9 = 99
1) 297 : 99 = 3

2) 520 : 65 = 8

3) 3 + 8 = 11
4)